docs: add php enqueue docs for version 3.2.0

Author: swashata

site/docs/apis/php-api.md

@@ -149,12 +149,12 @@ An associative array of additional configuration.
 
 Here are the supported keys:
 
--   `js` (`boolean`) True if we are to include javascript files.
--   `css` (`boolean`) True if we are to include stylesheet files.
--   `js_dep` (`array`) Additional dependencies for the javascript assets.
--   `css_dep` (`array`) Additional dependencies for the stylesheet assets.
--   `in_footer` (`boolean`) Whether to print the assets in footer (for js only).
--   `media` (`string`) Media attribute for stylesheets (defaults `'all'`).
+- `js` (`boolean`) True if we are to include javascript files.
+- `css` (`boolean`) True if we are to include stylesheet files.
+- `js_dep` (`array`) Additional dependencies for the javascript assets.
+- `css_dep` (`array`) Additional dependencies for the stylesheet assets.
+- `in_footer` (`boolean`) Whether to print the assets in footer (for js only).
+- `media` (`string`) Media attribute for stylesheets (defaults `'all'`).
 
 **defaults to**
 
@@ -251,21 +251,13 @@ Let us consider the following `manifest.json` file generated by `@wpackio/script
 	"wpackioEp": {
 		"main": {
 			"js": ["app/runtime.js", "app/vendor~main.js", "app/main.js"],
-			"js.map": [
-				"app/runtime.js.map",
-				"app/vendor.js.map",
-				"app/main.js.map"
-			],
+			"js.map": ["app/runtime.js.map", "app/vendor.js.map", "app/main.js.map"],
 			"css": ["app/main.css"],
 			"css.map": ["app/main.css.map"]
 		},
 		"mobile": {
 			"js": ["app/runtime.js", "app/vendor~mobile.js", "app/mobile.js"],
-			"js.map": [
-				"app/runtime.js.map",
-				"app/vendor.js.map",
-				"app/mobile.js.map"
-			]
+			"js.map": ["app/runtime.js.map", "app/vendor.js.map", "app/mobile.js.map"]
 		}
 	}
 }
@@ -402,3 +394,101 @@ $enqueue->getManifest( $asset );
 
 The relative path of the asset (with forward `/` as director separator) for which
 URL is to be calculated.
+
+## Instance API: `getPrimaryJsHandle`
+
+Get primary js handle from enqueued/registered assets. This is useful to localize/translate the script handle.
+
+### Usage
+
+```php
+$enqueue = new \WPackio\Enqueue( 'appName', 'dist', '1.0.0', 'plugin', PLUGIN_PATH );
+$assets = $enqueue->enqueue(); // or ->register
+$primary_js_handle = $enqueue->getPrimaryJsHandle( $assets );
+```
+
+### Parameters
+
+It accepts only one parameter.
+
+```php
+$enqueue->getPrimaryJsHandle( $assets );
+```
+
+#### `$assets` (`array`)
+
+Assets array as returned from enqueue or register.
+
+## Instance API: `getPrimaryCssHandle`
+
+Get primary css handle from enqueued/registered assets. This is useful to localize/translate the script handle.
+
+### Usage
+
+```php
+$enqueue = new \WPackio\Enqueue( 'appName', 'dist', '1.0.0', 'plugin', PLUGIN_PATH );
+$assets = $enqueue->enqueue(); // or ->register
+$primary_css_handle = $enqueue->getPrimaryCssHandle( $assets );
+```
+
+### Parameters
+
+It accepts only one parameter.
+
+```php
+$enqueue->getPrimaryCssHandle( $assets );
+```
+
+#### `$assets` (`array`)
+
+Assets array as returned from enqueue or register.
+
+## Instance API: `getJsHandles`
+
+Get all js handles from enqueued/registered assets. Would return an empty array
+if no handles were found or if invalid input.
+
+### Usage
+
+```php
+$enqueue = new \WPackio\Enqueue( 'appName', 'dist', '1.0.0', 'plugin', PLUGIN_PATH );
+$assets = $enqueue->enqueue(); // or ->register
+$js_handles = $enqueue->getJsHandles( $assets );
+```
+
+### Parameters
+
+It accepts only one parameter.
+
+```php
+$enqueue->getJsHandles( $assets );
+```
+
+#### `$assets` (`array`)
+
+Assets array as returned from enqueue or register.
+
+## Instance API: `getCssHandles`
+
+Get all css handles from enqueued/registered assets. Would return an empty array
+if no handles were found or if invalid input.
+
+### Usage
+
+```php
+$enqueue = new \WPackio\Enqueue( 'appName', 'dist', '1.0.0', 'plugin', PLUGIN_PATH );
+$assets = $enqueue->enqueue(); // or ->register
+$css_handles = $enqueue->getCssHandles( $assets );
+```
+
+### Parameters
+
+It accepts only one parameter.
+
+```php
+$enqueue->getCssHandles( $assets );
+```
+
+#### `$assets` (`array`)
+
+Assets array as returned from enqueue or register.